<template>
   <div class="list" ref="wrapper">
       <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper"  @click="handleCityClick(this.$store.state.city)">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
                </div>
            </div>
       </div>
   </div>
</template>

<script>
import { mapState, mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  data () {
    return {
      city: ''
    }
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  methods: {
    handleCityClick (city) {
    //   this.$store.dispatch('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        // console.log(this.$refs[this.letter])
        this.scroll.scrollToElement(element)
      }
    //   console.log(this.letter)
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style lang="stylus" scoped>
@import '~styles/variables.styl';
    .border-topbottom
      &:before
          border-color #ccc
      &:after
          border-color #ccc
    .border-topbottom
      &:before
          border-color #ccc
    .list
        overflow hidden
        position absolute
        top 1.58rem
        left 0
        right 0
        bottom 0
        // background red
        .title
            line-height 0.54rem
            background-color #eee
            padding-left 0.2rem
            color #666666
            font-size 0.26rem
        .button-list
            overflow hidden
            padding 0.1rem 0.6rem 0.1rem 0.1rem
        .button-wrapper
            width 33.33%
            float left
            .button
                text-align center
                padding 0.1rem 0
                margin 0.1rem
                border 0.02rem solid #ccc
                border-radius 0.06rem
        .item-list
        .item
            line-height 0.76rem
            color #666666
            padding-left 0.2rem
</style>
